Shell of electronic equipment and electronic equipment
By designing isolated sound transmission channels and receiving slots within the electronic device housing, and combining this with dipole sound field technology, the problem of sound leakage in voice call scenarios is solved, achieving higher privacy and sound quality, and making it suitable for a variety of electronic devices.
Patent Information
- Application Number
- CN202520110119.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Existing electronic devices have poor sound directionality in voice call scenarios, leading to sound leakage and affecting privacy.
Design an electronic device housing with isolated first and second sound transmission channels and a receiving groove to ensure that sound waves propagate through a specific sound outlet. Combined with dipole sound field technology, the phase difference is used to control the destructive phase of sound waves to form far-field noise reduction.
Significantly reduces sound leakage, improves privacy and sound quality during voice calls, reduces device thickness, and is suitable for foldable electronic devices.
Smart Images
Figure CN223912576U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electronic device manufacturing, and in particular to a shell of an electronic device and the electronic device. BACKGROUND
[0002] As a common electroacoustic transducer, a loudspeaker is widely used in various electronic devices. For an electronic device with a voice call function, there are generally two working scenarios. The first scenario is a voice call scenario, in which a person holding the electronic device for voice call can clearly hear the sound emitted by the electronic device, while other people around cannot hear the sound emitted by the electronic device. The second scenario is an external playing scenario, in which people within a certain range around the electronic device can hear the sound emitted by the electronic device.
[0003] At least two loudspeakers are generally provided in the electronic device, one of which works in the first scenario, and the sound is transmitted outward from the earpiece sound hole, and the other of which works in the second scenario, and the sound is transmitted outward from the external playing sound hole. However, in the first scenario of the current electronic device, a large part of the sound wave will propagate inside the electronic device to the external playing sound hole and be transmitted outward from the external playing sound hole, resulting in poor directivity of the sound and affecting the privacy of voice call. CONTENT OF THE UTILITY MODEL
[0004] The shell of the electronic device and the electronic device provided in the embodiments of the present application can overcome the problems in the related art, and the technical solutions are as follows.
[0005] In a first aspect, the embodiments of the present application provide a shell of an electronic device, which has a first sound outlet opening on one side and a second sound outlet opening on the other side. The shell has a first sound transmission channel, a second sound transmission channel, a first accommodating groove and a second accommodating groove. The first sound transmission channel and the second sound transmission channel are isolated from each other, and the first accommodating groove and the second accommodating groove are isolated from each other. One end of the first sound transmission channel is connected to the first sound outlet opening, and the other end is in communication with the first accommodating groove. One end of the second sound transmission channel is connected to the second sound outlet opening, and the other end is in communication with the second accommodating groove.
[0006] Based on the above features, the first accommodating groove and the second accommodating groove are isolated from each other, and the first sound transmission channel and the second sound transmission channel are isolated from each other, which can prevent the sound wave emitted by the sound emitting unit located in the first accommodating groove from propagating to the second sound outlet opening, and prevent the sound wave emitted by the sound emitting unit located in the second accommodating groove from propagating to the first sound outlet opening.
[0007] If the first sound outlet is used as a receiver sound hole and the second sound outlet is used as an external sound hole, sound waves generated by the sound generating unit located in the first accommodating groove can be transmitted to the first sound outlet through the first sound transmission channel and then transmitted outward from the first sound outlet. This greatly limits the transmission of sound waves through the space inside the shell to the second sound outlet, making the sound transmitted outward by the electronic device more directional in the voice communication scenario, directly pointing to the user's ear, thereby significantly reducing the leakage of sound and improving the protection of privacy.
[0008] In some examples, the shell includes a first middle frame, the first middle frame includes a frame-shaped portion, and the frame-shaped portion includes a plurality of connected side edges. The second sound outlet is located on the outer side wall of the first side edge, the first side edge is one of the plurality of side edges, and the first sound outlet is located on the surface of the first side edge adjacent to the outer side wall. By arranging the first sound outlet and the second sound outlet on the same side edge, the first sound outlet and the second sound outlet can be arranged close to each other, which is conducive to the formation of a sound dipole and the realization of far-field sound elimination through a dipole sound field.
[0009] In some examples, in the length direction of the first side edge, the range in which the first sound outlet is distributed and the range in which the second sound outlet is distributed at least partially overlap. By overlapping the range in which the first sound outlet is distributed and the range in which the second sound outlet is distributed, the formation of a sound dipole can be more conducive, and the more the ranges overlap, the more conducive it is to realize far-field sound elimination.
[0010] In some examples, the first middle frame further includes a support portion located in the frame-shaped portion, and an edge of the support portion is connected to the frame-shaped portion. The first accommodating groove and the second accommodating groove are located in the support portion, and the first accommodating groove and the second accommodating groove are arranged along the length direction of the first side edge. Compared with stacking the first accommodating groove and the second accommodating groove, arranging the first accommodating groove and the second accommodating groove along the length direction of the first side edge is more conducive to reducing the size of the first middle frame in a direction perpendicular to the length direction of the plurality of side edges and reducing the thickness of the electronic device.
[0011] In some examples, the support portion further has a third accommodating groove, the first accommodating groove is located at the bottom of the third accommodating groove, and the second accommodating groove is located outside the third accommodating groove.
[0012] Based on the above features, the first accommodating groove and the third accommodating groove form an integral whole. When a sound generating unit with an open sound cavity is arranged in the first accommodating groove, the third accommodating groove can be used as part of the sound cavity to increase the volume of the sound cavity of the sound generating unit and improve the sound quality.
[0013] In some examples, the volume of the third accommodating groove is greater than the volume of the second accommodating groove.
[0014] In the case that the first sound outlet opening is used as the earpiece sound hole, the sound unit in the first accommodating groove mainly produces sound in the scenario of voice communication. The third accommodating groove can be used as a back sound cavity of the sound unit, which helps to improve the low frequency part of the sound. The sound unit used in voice communication is usually small in volume and weak in performance compared with the sound unit used in external playing. By setting the volume of the third accommodating groove to be relatively large, the low frequency part of the sound produced by the sound unit in the first accommodating groove is enhanced, which can better improve the quality of voice communication and enable the user to clearly hear the content of voice communication.
[0015] In some examples, the first middle frame further includes a first cover plate connected with the support portion to seal the third accommodating groove. The first cover plate seals the third accommodating groove, which in turn seals the back sound cavity of the sound unit in the first accommodating groove, thereby avoiding sound leakage and sound short circuit.
[0016] In some examples, the groove bottom of the third accommodating groove further has a support protrusion in contact with the first cover plate.
[0017] Based on the above features, the first cover plate is supported by the support protrusion from the third accommodating groove, which can avoid deformation or collapse of the support portion.
[0018] In some examples, the shell further includes a second middle frame rotatably connected with the first middle frame, so that the shell can be applied to a foldable electronic device.
[0019] In a second aspect, the embodiments of the present application further provide an electronic device, which includes a first sound unit, a second sound unit and any one of the shells as described in the first aspect, the first sound unit is located in the first accommodating groove, and the second sound unit is located in the second accommodating groove.
[0020] Based on the above features, taking the case that the first sound outlet opening is used as the earpiece sound hole and the second sound outlet opening is used as the external playing sound hole as an example, in the shell, the first accommodating groove and the second accommodating groove are isolated from each other, and the first sound transmission channel and the second sound transmission channel are isolated from each other. The sound waves generated by the first sound unit when working can basically propagate to the first sound outlet opening via the first sound transmission channel and propagate outward from the first sound outlet opening. The propagation of the sound waves to the second sound outlet opening through the space inside the shell is greatly limited. In the scenario of voice communication, the sound propagated outward by the electronic device is more directional, directly pointing to the ear of the user of the electronic device, thereby the leakage phenomenon can be obviously weakened and the protection of privacy can be improved.
[0021] In some examples, the first sound generating unit includes a driving part and a diaphragm, and the diaphragm is connected to the driving part. The driving part is connected to the inner wall of the first accommodating groove, and the diaphragm divides the first accommodating groove into a first front sound cavity and a first rear sound cavity, and the first front sound cavity is in communication with the first sound transmission channel. That is, the first sound generating unit only includes a core, which reduces the weight of the first sound generating unit and also reduces the manufacturing cost. The diaphragm divides the front sound cavity and the rear sound cavity in the first accommodating groove, and since there is no need to leave space to arrange a loudspeaker box in the first accommodating groove, the volume of the sound cavity formed is larger.
[0022] In some examples, the electronic device further includes a controller connected to the first sound generating unit and the second sound generating unit, and the controller is configured to control the first sound generating unit to generate a first sound wave and control the second sound generating unit to generate a second sound wave, and the phase difference between the second sound wave and the first sound wave is nπ, and n is an odd number, that is, the first sound wave and the second sound wave are in opposite phase.
[0023] Exemplarily, n is 1.
[0024] Based on the above features, in the scenario of voice communication, the first sound generating unit and the second sound generating unit can work under the action of the controller to form a dipole sound field. The first sound generating unit generates a first sound wave from the first sound outlet, which can be clearly heard by the user who is in voice communication. The first sound outlet and the second sound outlet are far away from the people around the user, and the first sound wave and the second sound wave propagate to the people around the user, and the first sound wave and the second sound wave are superimposed and cancelled with each other, realizing far-field sound elimination and avoiding the people around the user from clearly hearing the content of the voice communication. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 is a structural schematic diagram of an electronic device provided by an embodiment of the present application;
[0026] Figure 2 is a partial structural schematic diagram of a shell of an electronic device in the related art;
[0027] Figure 3 is a structural schematic diagram of a shell of an electronic device provided by an embodiment of the present application;
[0028] Figure 4 is a schematic diagram of a first sound transmission channel and a second sound transmission channel of a shell provided by an embodiment of the present application;
[0029] Figure 5 is a partial enlarged schematic diagram of a shell provided by an embodiment of the present application;
[0030] Figure 6 is a structural schematic diagram of a shell provided by an embodiment of the present application;
[0031] Figure 7 is a structural schematic diagram of a shell provided by an embodiment of the present application;
[0032] Figure 8 is a structural schematic diagram of a shell of an electronic device provided by an embodiment of the present application;
[0033] Figure 9 is a structural schematic diagram of an electronic device provided by an embodiment of the present application;
[0034] Figure 10 is a sectional view of I-I in Figure 9
[0035] Figure 11 is a structural schematic diagram of an internal structure of an electronic device provided by an embodiment of the present application.
[0036] Legend
[0037] 1000, shell 1001, middle frame 1001a, earpiece sound hole 1001b, external sound hole
[0038] 11, first middle frame 11a, first sound transmission channel 11b, second sound transmission channel 12, second middle frame
[0039] 111, frame-shaped part 111a, first sound outlet opening 111b, second sound outlet opening
[0040] 112, support part 112a, first accommodating groove 112b, second accommodating groove 112c, third accommodating groove
[0041] 113, first cover plate 114, second cover plate
[0042] 1110, retaining edge 1111, first retaining edge 1121, support protrusion
[0043] 201, first sound production unit 201a, first front sound cavity 201b, first rear sound cavity
[0044] 202, second sound production unit 2011, driving part 2012, diaphragm
[0045] 30, controller DETAILED DESCRIPTION
[0046] The terms used in the embodiments of the present application are used only to explain the embodiments of the present application, and are not intended to limit the present application. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood as the common meanings to those skilled in the art. The terms "first", "second", "third", and the like used in the patent application specification and claims of the present application do not denote any sequence, quantity, or importance, but are used to distinguish different components. Similarly, the terms "one", "another", and the like do not denote quantity, but mean at least one. The terms "include", "comprise", and the like mean that the elements or objects before the "include" or "comprise" encompass the elements or objects listed after the "include" or "comprise" and equivalents thereof, and do not exclude other elements or objects. The terms "connected", "coupled", and the like do not mean physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.
[0047] Figure 1 is a structural schematic diagram of an electronic device provided by an embodiment of the present application. The electronic device can be, but is not limited to, a mobile phone, a smart watch, a smart bracelet, a tablet computer, a palm computer, and a smart speaker. In the embodiment of the present application, a mobile phone is taken as an example. As shown in Figure 1 , the electronic device includes a shell 1000 and a plurality of sound emitting units, and the sound emitting units are located inside the shell 1000. The shell 1000 can include a middle frame 1001. Exemplarily, the sound emitting units can be loudspeakers.
[0048] Figure 2 is a partial structural schematic diagram of a shell of an electronic device in the related art, as shown in Figure 2 , the middle frame 1001 has sound holes, for example, the outer side wall of the middle frame 1001 has an external sound hole 1001b, and the surface adjacent to the outer side wall of the middle frame 1001 has an earpiece sound hole 1001a. Figure 2In the example shown in FIG. 1, the loudspeaker sound hole 1001b and the earpiece sound hole 1001a are located on the same side of the middle frame 1001, and in other related technologies, the loudspeaker sound hole 1001b and the earpiece sound hole 1001a can also be located on different sides of the middle frame 1001. The electronic device includes two sound emitting devices, including an earpiece speaker and a loudspeaker. In the scenario of making a voice call, the earpiece speaker emits sound, and the sound wave is transmitted outward through the earpiece sound hole 1001a. In the scenario of playing sound, the loudspeaker emits sound, and the sound wave is transmitted outward through the loudspeaker sound hole 1001b. In the actual process of making a voice call, only part of the sound wave generated by the earpiece speaker is transmitted outward after being transmitted to the earpiece sound hole 1001a, and a larger part of the sound wave is transmitted to the loudspeaker sound hole 1001b through the internal space of the electronic device, and is transmitted outward through the loudspeaker sound hole 1001b. This causes the electronic device to have a leakage phenomenon, and people within a certain range around the user can also hear the content of the voice call, causing privacy leakage.
[0049] Figure 3 FIG. 1 is a structural schematic diagram of a shell of an electronic device provided by an embodiment of the present application, as shown in the figure, one side of the shell 1000 adjacent to two sides has a first sound outlet opening 111a, and the other side has a second sound outlet opening 111b. Figure 3
[0050] The first sound outlet opening 111a and the second sound outlet opening 111b are sound outlet holes of the shell, and any one of them can be used as an earpiece sound hole, and the other can be used as a loudspeaker sound hole.
[0051] As an example, the first sound outlet opening 111a can be used as an earpiece sound hole and can include a slit, and the second sound outlet opening 111b can be used as a loudspeaker sound hole and can include a plurality of through holes.
[0052] The shell 1000 has a first sound transmission channel 11a, a second sound transmission channel 11b, a first accommodating groove 112a, and a second accommodating groove 112b. The first accommodating groove 112a and the second accommodating groove 112b are respectively used to accommodate a sound emitting unit.
[0053] Figure 3 The shapes of the first sound outlet opening 111a, the second sound outlet opening 111b, the first sound transmission channel 11a, the second sound transmission channel 11b, the first accommodating groove 112a, and the second accommodating groove 112b shown in FIG. 1 are only examples, and in other possible implementations, the first sound outlet opening 111a, the second sound outlet opening 111b, the first sound transmission channel 11a, the second sound transmission channel 11b, the first accommodating groove 112a, and the second accommodating groove 112b can also have other shapes.
[0054] The first sound transmission channel 11a and the second sound transmission channel 11b are isolated from each other, and the first accommodating groove 112a and the second accommodating groove 112b are isolated from each other. One end of the first sound transmission channel 11a is connected with the first sound outlet 111a, and the other end of the first sound transmission channel 11a is in communication with the first accommodating groove 112a. One end of the second sound transmission channel 11b is connected with the second sound outlet 111b, and the other end of the second sound transmission channel 11b is in communication with the second accommodating groove 112b.
[0055] Figure 4 is a schematic view of a first sound transmission channel and a second sound transmission channel of a shell provided in an embodiment of the present application, Figure 4 In the figure, the first sound transmission channel 11a and the second sound transmission channel 11b are shown in dashed lines, and the relative positions of the first sound transmission channel 11a and the second sound transmission channel 11b in the shell 1000 are shown. As shown in the figure, Figure 4 In the embodiment of the present application, since the first accommodating groove 112a and the second accommodating groove 112b are isolated from each other, the first sound transmission channel 11a and the second sound transmission channel 11b are isolated from each other, and therefore the sound waves generated by the sound generating unit (for example, the first sound generating unit 201 in the figure Figure 4 ) in the first accommodating groove 112a can basically propagate to the first sound outlet 111a through the first sound transmission channel 11a and propagate outward from the first sound outlet 111a, greatly limiting the propagation of sound waves through the space inside the shell to the second sound outlet 111b. In the scenario of voice communication, the sound propagated outward by the electronic device is more directional, directly pointing to the ear of the user of the electronic device, so as to significantly weaken the phenomenon of sound leakage and improve the protection of privacy.
[0056] In the scenario of voice communication, the sound generating unit (for example, the second sound generating unit 202 in the figure Figure 4 ) in the second accommodating groove 112b forms a sound attenuation area, and in the process of realizing far-field sound attenuation, the sound waves generated by the sound generating unit in the first accommodating groove 112a and the sound waves generated by the sound generating unit in the second accommodating groove 112b can also be mutually canceled in the shell 1000, which is beneficial to improve the quality of voice communication. The process of forming a sound attenuation area and realizing far-field sound attenuation can refer to the related description in the following.
[0057] In addition to the electronic device capable of voice communication, the shell of the electronic device and the electronic device mentioned in the embodiments of the present application can also be applied to other scenarios where sound directivity needs to be improved. For example, the shell 1000 can be a shell of a sound box. In one working condition, the sound emitted by the sound box can be propagated in the direction in which the first sound outlet opening 111a is directed and the direction in which the second sound outlet opening 111b is directed. In another working condition, the sound emitted by the sound box can be propagated only in the direction in which the first sound outlet opening 111a is directed or in the direction in which the second sound outlet opening 111b is directed. Taking the case where the sound emitted by the sound box is propagated only in the direction in which the first sound outlet opening 111a is directed as an example, the sound waves generated by the sound generating unit located in the first accommodating groove 112a can be propagated to the first sound outlet opening 111a via the first sound transmission channel 11a and then propagated outward from the first sound outlet opening 111a, which greatly limits the propagation of the sound waves through the space inside the shell to the second sound outlet opening 111b, so that the sound emitted by the sound box is better directed in the direction in which the first sound outlet opening 111a is directed. In this process, the sound generating unit located in the second accommodating groove 112b can also form a sound attenuation area to achieve far-field sound attenuation, so that the sound emitted by the sound box is limited to the direction in which the first sound outlet opening 111a is directed and the area close to the sound box.
[0058] As shown in Figure 3 , the shell 1000 includes a first middle frame 11, and the first middle frame 11 includes a frame-shaped portion 111 and a support portion 112. The support portion 112 is located in the frame-shaped portion 111, and the edge of the support portion 112 is connected to the frame-shaped portion 111. The frame-shaped portion 111 forms the side surface of the electronic device, and the support portion 112 can be used for the arrangement of devices inside the electronic device. For example, the support portion 112 can be used for the arrangement of sound generating devices, mainboards, and batteries.
[0059] Figure 5 is a partial enlarged view of a shell according to an embodiment of the present application, as shown in Figure 5 , the frame-shaped portion 111 includes a plurality of blocking edges 1110 connected to each other. For example, the plurality of blocking edges 1110 are sequentially connected in a head-to-tail manner to form a polygonal frame. The blocking edge 1110 has an outer side wall and a top surface. The plurality of blocking edges 1110 enclose a frame body, the outer side wall of the blocking edge 1110 refers to the surface of the blocking edge 1110 close to the outer side of the frame body, and the top surface of the blocking edge 1110 refers to the surface of the blocking edge 1110 adjacent to the outer side wall, which can be used for connecting a display panel.
[0060] As an example, the second sound outlet opening 111b is located on the outer side wall of the first baffle 1111, and the first baffle 1111 is one of the plurality of baffles 1110. The first sound outlet opening 111a is located on the surface of the first baffle 1111 adjacent to the outer side wall, that is, the first sound outlet opening 111a is located on the top surface of the first baffle 1111. That is, the first sound outlet opening 111a and the second sound outlet opening 111b are located on the same baffle 1110.
[0061] The first sound outlet opening 111a is arranged on the top surface of the first baffle 1111 and can serve as a receiver sound hole; and the second sound outlet opening 111b is arranged on the outer side wall of the first baffle 1111 and can serve as a loudspeaker sound hole.
[0062] In the electronic device, the sound emitted by the sound emitting unit in the first accommodating groove 112a is propagated to the outside of the electronic device from the first sound outlet opening 111a, and the sound emitted by the sound emitting unit in the second accommodating groove 112b is propagated to the outside of the electronic device from the second sound outlet opening 111b. For an object outside the electronic device, the first sound outlet opening 111a and the second sound outlet opening 111b can be equivalent to two sound sources. By arranging the first sound outlet opening 111a and the second sound outlet opening 111b on the same baffle 1110, the first sound outlet opening 111a and the second sound outlet opening 111b can be made to be close to each other, that is, the two equivalent sound sources are made to be close to each other, so as to facilitate the formation of a sound dipole in the electronic device. In the scenario of voice communication, the dipole sound field further suppresses the leakage phenomenon and improves privacy.
[0063] The sound dipole refers to two sound sources with small spacing, same amplitude and opposite phase. Here, the small spacing can refer to a spacing smaller than the wavelength of sound in the air that can be heard by the human ear. The dipole sound field refers to the sound field generated when the sound dipole works. The amplitudes of the two sound sources in the sound dipole are the same, and the phases are opposite. In the near-field region, that is, the region close to the sound dipole, the sound emitted by the first sound outlet opening 111a can be clearly heard. In the far-field region, that is, the region far from the sound dipole, the two sound waves with the same amplitude and opposite phase will cancel each other out, forming a sound-eliminated region, realizing far-field sound elimination, avoiding people around the user from being able to hear the content of the voice communication, and thus further improving privacy.
[0064] In some possible implementations, the first sound outlet opening 111a and the second sound outlet opening 111b can also be located on different baffles 1110. For example, the first sound outlet opening 111a is located on the first baffle 1111, and the second sound outlet opening 111b is located on the second baffle, which is a baffle 1110 adjacent or opposite to the first baffle 1111.
[0065] The first sound outlet 111a and the second sound outlet 111b are usually arranged near the sound-emitting unit. Although the first sound outlet 111a and the second sound outlet 111b are arranged on different baffles 1110, the distance between the first sound outlet 111a and the second sound outlet 111b is increased, which reduces the effect of the dipole sound field in suppressing sound leakage. However, it also makes the arrangement of the sound-emitting unit in the housing more flexible, so as to adapt to the layout of the internal components of the electronic device.
[0066] like Figure 5 As shown, in the length direction of the first flange 1111, that is Figure 5 In the X direction shown, the distribution range of the first sound-emitting opening 111a and the distribution range of the second sound-emitting opening 111b at least partially overlap.
[0067] The range of the first sound outlet 111a refers to the direction along which the first sound outlet 111a is perpendicular to the length direction of the first stop 1111 (i.e., Figure 5 The range of the first sound outlet 111a is defined as the area occupied by the first sound outlet 111b when the second sound outlet 111b is projected onto the reference line in a direction perpendicular to the length direction of the first stop 1111; the reference line is a straight line parallel to the length direction of the first stop 1111.
[0068] As an example, the second sound transmission channel 11b is located in a portion of the first baffle 1111, and the orthographic projection of the top surface of the first baffle 1111 at least partially overlaps with the first sound outlet 111a, such that the distribution range of the first sound outlet 111a and the distribution range of the second sound outlet 111b overlap in the length direction of the first baffle 1111.
[0069] Along the length of the first stop 1111, the first sound-emitting opening 111a and the second sound-emitting opening 111b at least partially overlap, meaning that the distribution range of the first sound-emitting opening 111a at least partially overlaps with the distribution range of the second sound-emitting opening 111b. Since the first sound-emitting opening 111a and the second sound-emitting opening 111b can be considered as two equivalent sound sources to an object outside the electronic device, the at least partial overlap between the distribution ranges of the first sound-emitting opening 111a and the second sound-emitting opening 111b allows for a smaller distance between these two equivalent sound sources, facilitating the formation of acoustic dipoles and a noise-canceling region, thus achieving far-field noise cancellation. The greater the overlap between the distribution ranges of the first sound-emitting opening 111a and the second sound-emitting opening 111b, the smaller the distance between the two equivalent sound sources, which is more conducive to achieving far-field noise cancellation.
[0070] As an example, a midpoint of a range in which the first sound outlet 111a is distributed can coincide with a midpoint of a range in which the second sound outlet 111b is distributed.
[0071] As shown in Figure 5 , the first accommodating groove 112a and the second accommodating groove 112b are located in the support portion 112, and the first accommodating groove 112a and the second accommodating groove 112b are arranged along the length direction of the first baffle 1111.
[0072] Taking a mobile phone as an example, the thickness of the mobile phone is usually a relatively sensitive size. A larger thickness is not conducive to the use, holding and storage of the mobile phone, and has a greater impact on user experience. Users often prefer to use thinner mobile phones. Compared with stacking the first accommodating groove 112a and the second accommodating groove 112b (i.e., arranging the first accommodating groove 112a and the second accommodating groove 112b along the Z direction in Figure 5 , arranging the first accommodating groove 112a and the second accommodating groove 112b along the length direction of the first baffle 1111 is conducive to reducing the size of the first middle frame 11 in the direction perpendicular to the length direction of the plurality of baffles 1110 (i.e., the Z direction in Figure 5 ), and is more conducive to reducing the thickness of the electronic device, facilitating user use and improving user experience.
[0073] Figure 6 is a structural schematic diagram of a shell provided by an embodiment of the present application. As shown in Figure 6 , in the shell 1000, the support portion 112 of the first middle frame 11 further has a third accommodating groove 112c, the first accommodating groove 112a is located at the groove bottom of the third accommodating groove 112c, and the second accommodating groove 112b is located outside the third accommodating groove 112c. Figure 6 also schematically shows a sound generating unit located in the first accommodating groove 112a and a sound generating unit located in the second accommodating groove 112b.
[0074] The sound generating unit usually has an acoustic cavity, which can enhance the sound and adjust the sound quality. For example, the acoustic cavity can include a front acoustic cavity and a rear acoustic cavity. The front acoustic cavity is used to adjust the high frequency part of the sound, and the rear acoustic cavity is used to enhance the low frequency part of the sound. The sound generating unit usually includes a speaker box and a core, and the core is located in the speaker box, which divides the speaker box into a front acoustic cavity and a rear acoustic cavity. In order to increase the acoustic cavity, the speaker box can be set to a non-closed structure, for example, an opening is provided at the part of the speaker box located at the rear acoustic cavity, so that the rear acoustic cavity is open and communicates with the internal space of the electronic device, thereby increasing the volume of the rear acoustic cavity and improving the low frequency part of the sound.
[0075] In this embodiment, by providing a third receiving groove 112c in the support portion 112 and arranging the first receiving groove 112a at the bottom of the third receiving groove 112c, the first receiving groove 112a and the third receiving groove 112c form a whole. Thus, when a sound-emitting unit with an open acoustic cavity is arranged in the first receiving groove 112a, the third receiving groove 112c can serve as part of the acoustic cavity, thereby increasing the volume of the acoustic cavity of the sound-emitting unit and improving sound quality.
[0076] As an example, the volume of the third receiving tank 112c is greater than the volume of the second receiving tank 112b.
[0077] In this embodiment, the first sound transmission channel 11a can be connected to the front acoustic cavity of the sound-emitting unit, and the rear acoustic cavity of the sound-emitting unit can be connected to the third receiving slot 112c. The larger third receiving slot 112c enhances the low-frequency portion of the sound. When the first sound outlet 111a serves as the earpiece sound hole, the sound-emitting unit in the first receiving slot 112a primarily emits sound during voice calls. The sound-emitting unit used for voice calls is typically smaller and less powerful than that used for external speakers. By setting the volume of the third receiving slot 112c to be relatively large, the low-frequency portion of the sound emitted by the sound-emitting unit in the first receiving slot 112a is enhanced, thus improving the sound quality of the human voice transmitted from the first sound outlet 111a, improving the quality of voice calls, and allowing the user to hear the content of the voice call more clearly.
[0078] Figure 7 This is a schematic diagram of the structure of a shell provided in an embodiment of this application, as shown below. Figure 7 As shown, in the housing 1000, the first middle frame 11 further includes a first cover plate 113, which is connected to the support portion 112 to seal the third receiving groove 112c.
[0079] The first cover plate 113 seals the third receiving groove 112c, thus sealing the rear acoustic cavity of the sound-generating unit in the first receiving groove 112a, preventing sound leakage and acoustic short circuits. Although the sound-generating unit in the first receiving groove 112a is arranged inside the housing, the third receiving groove 112c can also be sealed by other structures in the electronic device, such as a display panel. However, sealing by other structures is easily affected by factors such as the manufacturing and assembly precision of those other structures, resulting in relatively poor sealing performance. By setting the first cover plate 113 to seal the third receiving groove 112c, not only can the sound-generating unit in the first receiving groove 112a be isolated from other structures in the electronic device, providing protection for the sound-generating unit, but it can also ensure that the third receiving groove 112c is well sealed.
[0080] like Figure 6As shown, the groove bottom of the third accommodating groove 112c can also have a supporting protrusion 1121 which is in contact with the first cover plate 113.
[0081] Since the third accommodating groove 112c has a large volume, the area of the first cover plate 113 is also large, and the supporting portion 112 is prone to deformation or collapse when installed. By arranging the supporting protrusion 1121, the first cover plate 113 is supported from the third accommodating groove 112c, which can avoid deformation or collapse of the supporting portion 112.
[0082] Exemplarily, the supporting protrusion 1121 can be in the shape of a strip or a cross.
[0083] In this example, the first middle frame 11 can also include a second cover plate 114 which is connected to the supporting portion 112 to seal the second accommodating groove 112b. The second cover plate 114 isolates the sound generating unit in the second accommodating groove 112b from other structures in the electronic device, thereby providing protection for the sound generating unit.
[0084] As an example, the first cover plate 113 and the second cover plate 114 can be bonded to the supporting portion 112.
[0085] In Figures 1-7 In the example shown, the shell can be a shell of a non-foldable electronic device.
[0086] Figure 8 is a structural schematic diagram of a shell of an electronic device provided by an embodiment of the present application, as Figure 8 As shown in this example, the shell 1000 includes a first middle frame 11 and a second middle frame 12. The structure of the first middle frame 11 can be the same as any of the first middle frames 11 of the shells shown in Figures 3-7 The second middle frame 12 is rotationally connected to the first middle frame 11. That is, the shell is a shell of a foldable electronic device, for example, a shell of a double-foldable electronic device, a shell of a multi-foldable electronic device.
[0087] By arranging the first sound outlet opening 111a, the second sound outlet opening 111b, the first sound transmission channel 11a, the second sound transmission channel 11b, the first accommodating groove 112a, and the second accommodating groove 112b all in the first middle frame 11, the arrangement is simpler and the cost is lower.
[0088] Exemplarily, the shell can also include a hinge, and the first middle frame 11 and the second middle frame 12 are connected by the hinge 13.
[0089] Embodiments of the present application also provide an electronic device which can include Figures 3-8 any of the shells shown. The electronic device can be, but is not limited to, a mobile phone, a smart watch, a smart bracelet, a tablet computer, a palm computer, a smart speaker, and the like.
[0090] Take the non-foldable mobile phone as an example, Figure 9 is a disassembly structure diagram of an electronic device provided by an embodiment of the present application, as Figure 9 indicated, the electronic device includes a first sound emitting unit 201, a second sound emitting unit 202, and a shell 1000. The first sound emitting unit 201 is located in the first accommodating groove 112a, and the second sound emitting unit 202 is located in the second accommodating groove 112b.
[0091] In order to facilitate the display of the relationship between the first sound transmission channel 11a and the first sound emitting unit 201, the relationship between the second sound transmission channel 11b and the second sound emitting unit 202, Figure 9 in the first sound emitting unit 201, the first sound transmission channel 11a is shown by a dashed line, and the second sound transmission channel 11b is shown at the second sound emitting unit 202.
[0092] In the shell 1000, the first accommodating groove 112a and the second accommodating groove 112b are isolated from each other, and the first sound transmission channel 11a and the second sound transmission channel 11b are isolated from each other. Taking the first sound hole 111a as the earphone sound hole and the second sound hole 111b as the external sound hole as an example, the sound waves generated by the working of the first sound emitting unit 201 can basically propagate to the first sound hole 111a through the first sound transmission channel 11a and propagate outward from the first sound hole 111a. The propagation of sound waves through the space inside the shell 1000 to the second sound hole 111b is greatly limited, so that in the scenario of voice communication, the sound propagated outward by the electronic device is more directional, directly pointing to the ear of the user of the electronic device, thereby can obviously weaken the leakage phenomenon and improve the protection effect on privacy.
[0093] Figure 10 is Figure 9 I-I cross-sectional view in FIG. 1, the sound emitting unit generally includes a loudspeaker box and a core located in the loudspeaker box, and in the present example, as Figure 10 indicated, the first sound emitting unit 201 includes a driving part 2011 and a diaphragm 2012, the diaphragm 2012 is connected with the driving part 2011, and the driving part 2011 is used to drive the diaphragm 2012 to vibrate and emit sound. That is, in the present example, the first sound emitting unit 201 only includes the core.
[0094] The driving part 2011 is connected with the inner wall of the first accommodating groove 112a, and the diaphragm 2012 divides the first accommodating groove 112a into a first front sound cavity 201a and a first rear sound cavity 201b. The first front sound cavity 201a is in communication with the first sound transmission channel 11a.
[0095] In the embodiment of the present application, the first sound generating unit 201 only includes the core, which not only reduces the weight of the first sound generating unit 201 and the manufacturing cost, but also does not need to reserve space for arranging the speaker box in the first accommodating groove 112a, and directly separates a part of the first accommodating groove 112a as the first front sound cavity 201a and the first rear sound cavity 201b, so that the first front sound cavity 201a and the first rear sound cavity 201b can be larger.
[0096] In the present example, the support part 112 also has a third accommodating groove 112c, which is in communication with the first accommodating groove 112a, and the third accommodating groove 112c is also in communication with the first rear sound cavity 201b, which is equivalent to an enlarged first rear sound cavity 201b, which can further improve the sound quality.
[0097] Figure 11 is a schematic diagram of an internal structure of an electronic device provided by the embodiment of the present application, as Figure 11 shown, the electronic device can also include a controller 30 connected with the first sound generating unit 201 and the second sound generating unit 202. The controller 30 is configured to control the first sound generating unit 201 to emit the first sound wave and control the second sound generating unit 202 to emit the second sound wave, and the phase difference between the second sound wave and the first sound wave is nπ, n is an odd number. For example, n = 1.
[0098] Exemplarily, the controller 30 can be an audio driving circuit or a central processing unit in the electronic device. The controller 30 can be any structure in the electronic device that can control the first sound generating unit 201 and the second sound generating unit 202 to work.
[0099] The first sound generating unit 201 and the second sound generating unit 202 can work under the action of the controller 30 to form a dipole sound field. Since the phase difference between the first sound wave and the second sound wave is an odd multiple of π, the first sound wave and the second sound wave are in opposite phase. In the scenario of voice communication, the controller 30 controls the first sound generating unit 201 and the second sound generating unit 202 to work. The first sound generating unit 201 emits the first sound wave from the first sound outlet 111a, which can be clearly heard by the user who is conducting voice communication. The first sound outlet 111a and the second sound outlet 111b are far away from the people around the user, and in the process of propagating to the people around the user, the first sound wave and the second sound wave superimpose and cancel each other, forming a sound reduction area, realizing far-field sound reduction, and avoiding the people around the user from clearly hearing the content of the voice communication, thereby further improving the privacy.
[0100] In the scene of sound playing out, the controller 30 can also control the first sound unit 201 to emit a third sound wave, and control the second sound unit 202 to emit a fourth sound wave, the third sound wave and the fourth sound wave are in phase, that is, the phase difference is 0 or an even multiple of π, so that the third sound wave and the fourth sound wave are superimposed and enhanced, and people around the electronic equipment can more clearly hear the sound emitted by the electronic equipment.
[0101] The above only describes one embodiment of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A housing of an electronic device, characterized by, The shell (1000) has a first sound outlet opening (111a) on one side and a second sound outlet opening (111b) on the other side. The shell (1000) has a first sound transmission channel (11a), a second sound transmission channel (11b), a first accommodating groove (112a) and a second accommodating groove (112b), the first sound transmission channel (11a) and the second sound transmission channel (11b) are isolated from each other, and the first accommodating groove (112a) and the second accommodating groove (112b) are isolated from each other; one end of the first sound transmission channel (11a) is connected with the first sound outlet opening (111a), and the other end is in communication with the first accommodating groove (112a); one end of the second sound transmission channel (11b) is connected with the second sound outlet opening (111b), and the other end is in communication with the second accommodating groove (112b).
2. The housing of claim 1, wherein The shell (1000) comprises a first middle frame (11), and the first middle frame (11) comprises a frame-shaped portion (111) comprising a plurality of side edges (1110) connected with each other. The second sound outlet opening (111b) is located on the outer side wall of a first side edge (1111), the first side edge (1111) is one of the plurality of side edges (1110), and the first sound outlet opening (111a) is located on the surface of the first side edge (1111) adjacent to the outer side wall.
3. The housing of claim 2, wherein, In the length direction of the first side edge (1111), the distribution range of the first sound outlet opening (111a) and the distribution range of the second sound outlet opening (111b) at least partially overlap.
4. The housing according to claim 2 or 3, characterized in that The first middle frame (11) further comprises a supporting portion (112) located in the frame-shaped portion (111), and the edge of the supporting portion (112) is connected with the frame-shaped portion (111). The first accommodating groove (112a) and the second accommodating groove (112b) are located in the supporting portion (112), and the first accommodating groove (112a) and the second accommodating groove (112b) are arranged along the length direction of the first side edge (1111).
5. The housing of claim 4, wherein, The supporting portion (112) further has a third accommodating groove (112c), the first accommodating groove (112a) is located at the groove bottom of the third accommodating groove (112c), and the second accommodating groove (112b) is located outside the third accommodating groove (112c).
6. The housing of claim 5, wherein, The volume of the third accommodating groove (112c) is greater than the volume of the second accommodating groove (112b).
7. The housing according to claim 5 or 6, characterized in that The first middle frame (11) further comprises a first cover plate (113) connected with the supporting portion (112) to seal the third accommodating groove (112c).
8. The case according to claim 7, characterized in that The groove bottom of the third accommodating groove (112c) further has a supporting protrusion (1121) in contact with the first cover plate (113).
9. The housing according to any one of claims 2 to 8, characterized in that The shell (1000) further comprises a second middle frame (12) rotationally connected with the first middle frame (11).
10. An electronic device, comprising: The shell (1000) according to any one of claims 1-9, comprising a first sound generating unit (201) located in the first accommodating groove (112a) and a second sound generating unit (202) located in the second accommodating groove (112b).
11. The electronic device of claim 10, wherein, The first sound generating unit (201) comprises a driving part (2011) and a diaphragm (2012) connected to the driving part (2011). The driving part (2011) is connected to the inner wall of the first accommodating groove (112a), and the diaphragm (2012) divides the first accommodating groove (112a) into a first front sound cavity (201a) and a first rear sound cavity (201b), and the first front sound cavity (201a) is in communication with the first sound channel (11a).
12. The electronic device of claim 10 or 11, wherein, Further comprising a controller (30) connected to the first sound generating unit (201) and the second sound generating unit (202), and the controller (30) is configured to control the first sound generating unit (201) to emit a first sound wave and control the second sound generating unit (202) to emit a second sound wave, and the phase difference between the second sound wave and the first sound wave is nπ, and n is an odd number.